Currently, there are three main ways to measure the Hubble constant: by using astronomical measurements to look at objects nearby and see how fast they are moving; by using gravitational waves from ...

{r^2}\) The constant of proportionality is the universal gravitational constant ("big G") which equals \(6.674\times{10^{- 11}}N{m^2}k{g^{- 2}}\). Overall this equation is simpler than it looks as ...

The available gravitational wave data is consistent with this reciprocal coalescing area law. The existence of the universal black hole constant controls the coalescence of black holes.